ABSTRACT
This chapter begins with the sagittal sequences moving from lateral to medial, discusses the coronal sequences going from posterior to anterior, and describes the axial sequences and moving from the top to the bottom. The majority of pelvic and hip magnetic resonance imagings are done to look for either a fracture or avascular necrosis although soft tissue injury such as muscle tears and hematomas are also fairly common indications. Ultrasound is also a useful imaging modality for assessing extremity soft tissue abnormalities in the emergency room patient, including retained foreign bodies and abscesses. The posterior cruciate ligament (PCL) has very low intensity on all sequences because of its tight fibrous tissue construction. Tears of the PCL are rarely complete and are usually only associated with a knee dislocation. The Medial Collateral Ligament originates from the upper surface of the medial femoral condyle. The muscle usually ends in four to six separate tendons before becoming part of the rotator cuff.
